.bar {
    fill: steelblue;
}
#heading {
    font-family: 'Slabo 27px', serif;
    font-size: x-large;
}
.bar:hover {
    fill: red;
}
.axis {
    font: 10px sans-serif;
}
.axis path,
.axis line {
    fill: none;
    stroke: #000;
    shape-rendering: crispEdges;
}
#bar2 {
    overflow-x: auto;
}
.d3-tip {
    line-height: 1;
    font-weight: bold;
    padding: 12px;
    background: rgba(0, 0, 0, 0.8);
    color: #fff;
    border-radius: 2px;
}
/* Creates a small triangle extender for the tooltip */

.d3-tip:after {
    box-sizing: border-box;
    display: inline;
    font-size: 10px;
    width: 100%;
    line-height: 1;
    color: rgba(0, 0, 0, 0.8);
    content: "\25BC";
    position: absolute;
    text-align: center;
}
/* Style northward tooltips differently */

.d3-tip.n:after {
    margin: -1px 0 0 0;
    top: 100%;
    left: 0;
}
.x.axis path {
    display: none;
}
